Patents by Inventor Richard K. Chun
Richard K. Chun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11609164Abstract: A thermal desorber assembly includes a housing and a desorption heater element mounted in the housing with a sample cavity defined between the desorption heater element and an inner wall of the housing. An outlet port is defined in the housing. A flow channel connects the sample cavity in fluid communication with the outlet port for conveying analytes from the sample cavity to the outlet port for introducing the analytes to a spectrometer.Type: GrantFiled: March 18, 2022Date of Patent: March 21, 2023Assignee: Hamilton Sundstrand CorporationInventor: Richard K. Chun
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Patent number: 11415495Abstract: A thermal desorber assembly includes a housing and a desorption heater element mounted in the housing with a sample cavity defined between the desorption heater element and an inner wall of the housing. An outlet port is defined in the housing. A flow channel connects the sample cavity in fluid communication with the outlet port for conveying analytes from the sample cavity to the outlet port for introducing the analytes to a spectrometer.Type: GrantFiled: July 16, 2019Date of Patent: August 16, 2022Assignee: Hamilton Sundstrand CorporationInventor: Richard K. Chun
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Publication number: 20220214254Abstract: A thermal desorber assembly includes a housing and a desorption heater element mounted in the housing with a sample cavity defined between the desorption heater element and an inner wall of the housing. An outlet port is defined in the housing. A flow channel connects the sample cavity in fluid communication with the outlet port for conveying analytes from the sample cavity to the outlet port for introducing the analytes to a spectrometer.Type: ApplicationFiled: March 18, 2022Publication date: July 7, 2022Applicant: Hamilton Sundstrand CorporationInventor: Richard K. Chun
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Patent number: 11168805Abstract: This disclosure relates to a system including a valve, a control unit, and a thermal element. The thermal element is selectively operable in response to instructions from the control unit to control a position of the valve. The control unit is operable in a static mode and a dynamic mode. In the static mode, the valve position is held substantially constant. In the dynamic mode, the valve position is adjusted in response to a valve outlet condition.Type: GrantFiled: July 21, 2020Date of Patent: November 9, 2021Assignee: Hamilton Sundstrand CorporationInventors: Richard K. Chun, Wai Tak Lee
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Publication number: 20210018409Abstract: A thermal desorber assembly includes a housing and a desorption heater element mounted in the housing with a sample cavity defined between the desorption heater element and an inner wall of the housing. An outlet port is defined in the housing. A flow channel connects the sample cavity in fluid communication with the outlet port for conveying analytes from the sample cavity to the outlet port for introducing the analytes to a spectrometer.Type: ApplicationFiled: July 16, 2019Publication date: January 21, 2021Inventor: Richard K. Chun
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Publication number: 20200347951Abstract: This disclosure relates to a system including a valve, a control unit, and a thermal element. The thermal element is selectively operable in response to instructions from the control unit to control a position of the valve. The control unit is operable in a static mode and a dynamic mode. In the static mode, the valve position is held substantially constant. In the dynamic mode, the valve position is adjusted in response to a valve outlet condition.Type: ApplicationFiled: July 21, 2020Publication date: November 5, 2020Inventors: Richard K. Chun, Wai Tak Lee
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Publication number: 20160298783Abstract: This disclosure relates to a system including a valve, a control unit, and a thermal element. The thermal element is selectively operable in response to instructions from the control unit to control a position of the valve. The control unit is operable in a static mode and a dynamic mode. In the static mode, the valve position is held substantially constant. In the dynamic mode, the valve position is adjusted in response to a valve outlet condition.Type: ApplicationFiled: April 9, 2015Publication date: October 13, 2016Inventors: Richard K. Chun, Wai Tak Lee
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Patent number: 9418827Abstract: A method of ion source fabrication for a mass spectrometer includes simultaneously forming aligned component portions of an ion source using direct metal laser fusing of sequential layers. The method can further include forming the component portions on a base plate made from a ceramic material by applying fused powder to the base plate to build the component portions thereon.Type: GrantFiled: July 23, 2013Date of Patent: August 16, 2016Assignee: Hamilton Sundstrand CorporationInventors: Wai Tak Lee, Richard K. Chun
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Publication number: 20150028221Abstract: A method of ion source fabrication for a mass spectrometer includes simultaneously forming aligned component portions of an ion source using direct metal laser fusing of sequential layers. The method can further include forming the component portions on a base plate made from a ceramic material by applying fused powder to the base plate to build the component portions thereon.Type: ApplicationFiled: July 23, 2013Publication date: January 29, 2015Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Wai Tak Lee, Richard K. Chun
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Publication number: 20110209769Abstract: A valve has a housing including a valve seat. A valve pin is supported by a housing through a support shell. The support shell and the valve pin have distinct coefficients of thermal expansion such that when exposed to a temperature change, movement of the support shell moves differently than the pin. In this way, the valve pin can be caused to move toward and away from the valve seat to allow operation of the valve.Type: ApplicationFiled: March 1, 2010Publication date: September 1, 2011Inventor: Richard K. Chun
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Patent number: 7977113Abstract: A biological agent detector detects the presence of any biological agents, such as anthrax or other biological warfare agents, in a sample of air. The biological agent detector includes a bio-concentrator that concentrates an aerosol and a pyrolyzer portion including two detecting devices. One detecting device operates in a sample collection mode and collects a sample of air when the other detecting device operates in a sample analysis mode and analyzes a sample of air. After a predetermined amount of time, the detecting devices switch functions, providing continuous sampling of air.Type: GrantFiled: November 16, 2010Date of Patent: July 12, 2011Assignee: Hamilton Sundstrand CorporationInventors: William S. Donaldson, Richard K. Chun
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Publication number: 20110061447Abstract: A biological agent detector detects the presence of any biological agents, such as anthrax or other biological warfare agents, in a sample of air. The biological agent detector includes a bio-concentrator that concentrates an aerosol and a pyrolyzer portion including two detecting devices. One detecting device operates in a sample collection mode and collects a sample of air when the other detecting device operates in a sample analysis mode and analyzes a sample of air. After a predetermined amount of time, the detecting devices switch functions, providing continuous sampling of air.Type: ApplicationFiled: November 16, 2010Publication date: March 17, 2011Inventors: William S. Donaldson, Richard K. Chun
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Patent number: 7837937Abstract: A biological agent detector detects the presence of any biological agents, such as anthrax or other biological warfare agents, in a sample of air. The biological agent detector includes a bio-concentrator that concentrates an aerosol and a pyrolyzer portion including two detecting devices. One detecting device operates in a sample collection mode and collects a sample of air when the other detecting device operates in a sample analysis mode and analyzes a sample of air. After a predetermined amount of time, the detecting devices switch functions, providing continuous sampling of air.Type: GrantFiled: July 5, 2005Date of Patent: November 23, 2010Assignee: Hamilton Sundstrand CorporationInventors: William S. Donaldson, Richard K. Chun
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Patent number: 7339165Abstract: A chemical biological detection system detects the presence of biological agents in the air. The system includes a pyrolyzer having an inlet through which air is drawn into the pyrolyzer and a pyrotube that collects a sample of particles extracted from the air. The pyrolyzer further includes an exhaust line that exhausts the air drawn into the pyrolyzer and a sample line that directs the gases eluted from the sample collected in the pyrotube to a mass spectrometer for sample identification. After the sample is collected in the pyrotube, the sample is analyzed. A small droplet of a methylating reagent is added to the sample. If the sample includes any biological agents, the methylating reagent derivatizes organic materials to make them more volatile. The sample is then pyrolyzed, and the eluted gas sample is drawn through the sample line and into the mass spectrometer for identification of any biological agents.Type: GrantFiled: July 5, 2005Date of Patent: March 4, 2008Assignee: Hamilton Sundstrand CorporationInventors: William S. Donaldson, Richard K. Chun